请以“Saving Tigers”为题，为某中学生英语报《习作园地》专栏写一篇80词左右的征文稿，内容要点如下:

1. 老虎是人们在动物园里最喜欢观看的动物之一；

2. 现在世界上仅存大约3200只老虎，数目日趋减少；

3. 老虎处境危险的原因；

4. 保护老虎的建议。

All the students agreed to go to Qingdao by _______ sea and camp by _______ sea.

A. the; a B. / the C. /; / D. a; the

Do you know how long the meeting has _______?

A. lasted B. held C. over D. begun

Now mobile phones are not so expensive as they _______ to be.

A. use B. used C. are used D. were used

What was the boy searching ________?

A. for the Internet B. the information for the Internet

C. for on the Internet D. Internet

—Why are you looking for Mary in a hurry, John?

—The boss is wondering where she _______ and how long she _______ there.

A. has been; has been B. has gone; has gone

C. has been; has gone D. has gone; has been

You______ to the meeting this afternoon if you have something important to do.

A. needn’t to come B. don’t need come

C. don’t need coming D. needn’t come

The husband and wife have strange habits. He’d like to sleep with lamp _______ at night and his wife likes to sleep with the window _______.

A. burning; wide open B. burnt; widely opened

C. burnt; wide open D. burning; widely open

—What’s the weather like here this summer?

—There _______ very little rain.

A. are B. has C. has been D. have been

Could you tell me how many places of interest you ________ so far?

A. visited to B. have been C. have traveled to D. have gone to